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-MList::Util=sum -pF/R/
$_=sum$_=/R/*sum map y///c,@F,@F[1..@F-2]2+/R$/]
Try it online!Try it online!
$_=sum map y///c,@F,@F[1..@F-2]
Try it online!
$_=/R/*sum map y///c,@F,@F[1..@F-2+/R$/]
$\=2*sum$_=sum map$_=ymap y///c,@F}{$\-="@F"+$F[,@F[1..@F-1]2]
$\=2*sum map$_=y///c,@F}{$\-="@F"+$F[-1]
-aMList::Util=sum -pF/R/
say map chr$\=2*sum oct"0b$_"map$_=y///c,@F}{$\-="@F"+$F[-1]
-a
say map chr oct"0b$_",@F
